Want empirical evidence that bad-for-you foods are super-addictive? Look no further:
I'm not sure if this is an example of why I need to: (1) visit fast food restaurants more often, or (2) never, ever visit fast food restaurants.
By the way, I guess I should have warned you not to play this video at work unless your co-workers don't mind shrieks of "FUCK YOU AND YOUR FUCKING CHEESEBURGER" blasting through your computer speakers.